Thomomys bulbivorus (Richardson, 1829) . Fauna Boreali-Americana, 1:206.

TYPE LOCALITY: U.S.A., Oregon, banks of Columbia River, probably near Portland .

DISTRIBUTION: Willamette Valley (N.W. Oregon, U.S.A.).

COMMENT: Revised by Bailey, 1915, N. Am. Fauna, 39:1 -136.

ISIS NUMBER: 5301410003007003001 as T. bulbivorous (sic).